To pull together a relaxed casual ensemble with a twist, wear a brown crew-neck t-shirt with black ripped skinny jeans. Dial up the dressiness of this outfit a bit with black suede chelsea boots. And if we're talking casual clothing for 30-something guys, this combination is a good look on almost anyone.
A brown crew-neck t-shirt and black ripped skinny jeans matched together are the ideal combo for guys who love casual combinations. Go down a more classic route with footwear by wearing a pair of black suede chelsea boots. As you can see, in your thirties you have a vast array of style options.